The Mishimoto 1964 - 1966 Mustang Aluminum Radiator w 289 V8 is the ideal upgrade to the stock Mustang radiator.Designed and specifically engineered to maximize cooling efficiency, boost engine functions and protect your car from overheating.A stock radiator cannot handle the heat that comes along with having a great deal of horsepower.The Mishimoto '64 - '66 Mustang performance radiator features a lightweight dual core, 100 - percent brazed aluminum, and polished end tanks.Every Mishimoto Performance Radiator is a direct OEM fit, no cutting or modification is required.